Improvement in tool-holders



- UNITED STATES GEORGE COLLINS, OF FORT WAYNE, MICHIGAN.

"IMPROVEMENT IN TOOL-HOLDERS.

Specification forming part of Letters Patent No. 187,600, dated February20, 1877; application filed August 31, 1876.

To all whom it may concern:

Be it known that I, GEORGE Corners, of Fort Wayne, in the county ofWayne and State of Michigan, have invented an Improve ment inTool-Holders, which the following is a specification:

The nature of my invention relates to a combined tool for joiners andcabinet-makers, having for its object to facilitate the boring andcountersinki-ng of screw-holes, and the insertion of screws inwood-work.

The invention consists in the construction, arrangement, and combinationof the parts composing my combined tool-holder, as fully hereinafterexplained.

Figure l is a perspective view. Fig. 2 is a longitudinal section.

In the drawing, A represents a metal fork havinga square shank, adaptedto fit the socket of a bit-brace. B is a reversible double socket,pivoted by trunnions b b in the jaws of the fork. One socket is intendedto receive the shank of a bit, 0, and the other the shank of a screwdriver, D, respectively secured therein by set-screws c. A combined gageand counter-sink, E, is sleeved on the bit and secured in position by aset-screw, d. In each end of the socket B a longitudinal slot, e,is

cut, in which a sliding latch-bolt, f, enters to JJhe tool is insertedin the socket of a brace,

and with the bit the screw'hole is bored in the wood, the countersinkserving both as a depthing-gage and to counter-bore it to receive thehead of: the wood screw, which, after the socket B has been reversed,may be turned home by the driver.

I am aware of the patent granted to J. F. Murch, March 4,1873, andhereby disclaim the same.

What I claim-as my invention is-- The combined tool-holder described,consisting of the metal t'ork A, having square shank a, the reversibledouble socket B, pivoted by trunnions 1) between the ends of the saidfork, the slots rain the ends of the socket, and thesliding spring-latchf, all constructed, arranged, and combined substantially as describedand shown.

GEORGE COLLINS. Witnesses:

H. F. EBERTS, CHAS. J. HUNT.

